title: Relationship between glycated haemoglobin and subclinical atherosclerosis in obese children and adolescents.
abstract: OBJECTIVE
  To explore the relationship between glycated haemoglobin A1C (HbA1C) and subclinical atherosclerosis as assessed by carotid intima-media thickness (cIMT) in Chinese Han obese children and adolescents without diabetes.
  
  
  METHODS
  A total of 524 obese children and adolescents without diabetes were analysed. All participants underwent HbA1C measurements, oral glucose tolerance tests and ultrasound measurements of cIMT. The logistic regression models were implemented to evaluate the adjusted OR of HbA1C for increased cIMT.
  
  
  RESULTS
  In obese boys, HbA1C was associated with increased cIMT independently of age, measurements of anthropometry, blood pressure, plasma lipid and lipoprotein, fasting plasma glucose, 2 h postchallenge glucose, uric acid and hepatic function. After adjustment for all these risk factors, the OR of increased cIMT for every 1% (11 mmol/mol) increase in HbA1C was 2.702 (95% CI 1.640 to 4.452). However, in girls, the major risk factor independently associated with cIMT was measurement of abdominal obesity instead of HbA1C.
  
  
  CONCLUSIONS
  Our research suggests that the adoption of HbA1C as a diagnostic criterion of prediabetes and diabetes in obese boys may help to identify early macrovascular complications.
authors.affiliation: Department of Endocrinology, Children's Hospital of Zhejiang University School of Medicine, , Hangzhou, Zhejiang, China.
authors.forename: Lian-Hui
authors.initials: LH
authors.lastname: Chen
authors.forename: Wei-Fen
authors.initials: WF
authors.lastname: Zhu
authors.forename: Li
authors.initials: L
authors.lastname: Liang
authors.forename: Xiu-Zhen
authors.initials: XZ
authors.lastname: Yang
authors.forename: Chun-Lin
authors.initials: CL
authors.lastname: Wang
authors.forename: Yi-Ran
authors.initials: YR
authors.lastname: Zhu
authors.forename: Jun-Fen
authors.initials: JF
authors.lastname: Fu
mesh_terms: D000293:Adolescent; D000367:Age Factors; D050197:Atherosclerosis / Q000097:blood* / Q000209:etiology / Q000473:pathology; D001786:Blood Glucose / Q000032:analysis; D002339:Carotid Arteries / Q000000981:diagnostic imaging; D059168:Carotid Intima-Media Thickness; D002648:Child; D002681:China; D003924:Diabetes Mellitus, Type 2 / Q000150:complications / Q000175:diagnosis*; D005260:Female; D006442:Glycated Hemoglobin / Q000032:analysis*; D006801:Humans; D016015:Logistic Models; D008297:Male; D009765:Obesity / Q000097:blood / Q000150:complications*; D016017:Odds Ratio; D011237:Predictive Value of Tests; D012307:Risk Factors; D012737:Sex Factors
chemical_list: D001786:Blood Glucose; D006442:Glycated Hemoglobin
keywords: Glycated hemoglobin A1c; Obesity; adolescents; children; intima-media thickness